Using [] with Safe Navigation Operator in Ruby

Question

I currently have a piece of code that looks like this:

if match = request.path.match(/\A\/(?<slug>(?!admin|assets)\w+)/) match[:slug] end 

Is there a way to use the safe navigation operator (introduced in 2.3.0) to avoid this if conditional?

Answer 1

Just use the regular (non-sugar) form.

 request.path.match(/\A\/(?<slug>(?!admin|assets)\w+)/)&.[](:slug) 

Answer 2

You can use send any method, so with a secure browser it will be:

 request.path.match(/\A\/(?<slug>(?!admin|assets)\w+)/)&.send(:[], :slug) 

Answer 3

For better readability, I chose #dig instead of #[] .

how

 request.path.match(/\A\/(?<slug>(?!admin|assets)\w+)/)&.dig(:slug) 

instead

 request.path.match(/\A\/(?<slug>(?!admin|assets)\w+)/)&.[](:slug)